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An economic evaluation of cotton in the Gezira rotation
Simpson, I. G. - In: Agricultural economics bulletin for Africa 11 (1969), pp. 53-64
Persistent link: https://www.econbiz.de/10002820499
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New approachers to irrigated farming in the Sudan : organization and management
Simpson, I. G. - In: Land economics : applied research on environmental resources 46 (1970) 3, pp. 287-296
Persistent link: https://www.econbiz.de/10002820534
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New Approaches to Irrigated Farming in the Sudan: Organization and Management
Simpson, I. G. - In: Land Economics 46 (1970) 3
Persistent link: https://www.econbiz.de/10008504957